I was curious about how Plan B -- or emergency contraception -- worked. I had thought that it prevented implantation, but it apparently works differently -- or at least it can prevent pregnancies in other ways. Unlike usual contraception, this is taken within 72 hours AFTER sex.
"How does emergency contraception work?
The pill versions of emergency contraception work by either delaying or preventing ovulation, and perhaps by altering a woman’s cervical mucus to create a hostile environment for sperm. A copper IUD prevents fertilization and also probably the implantation of a fertilized egg in the uterus. Emergency contraception is therefore not an abortion, since it prevents, rather than ends, a pregnancy."
http://www.healthline.com/health/emergency-contraception/overview
But then another site, the FDA, includes the implantation prevention as part of the way it could work. So, I guess it could do both -- 1) prevent the sperm and egg from joining or 2) if they do meet, to prevent it from implantation.
3. How does Plan B work?
"Plan B works like other birth control pills to prevent pregnancy. Plan B acts primarily by stopping the release of an egg from the ovary (ovulation). It may prevent the union of sperm and egg (fertilization). If fertilization does occur, Plan B may prevent a fertilized egg from attaching to the womb (implantation). If a fertilized egg is implanted prior to taking Plan B, Plan B will not work."
http://www.fda.gov/drugs/drugsafety/postmarketdrugsafetyinformationforpatientsandproviders/ucm109795.htm
I've only done 15 minutes of research on this, so I am not sure about what rate the emergency contraception works in one way versus another, but the Personhood Amendment would end this, if the Supreme Court found it to be constitutional.
As for previous comments about when life starts. Sure, I would agree that when an egg and a sperm meet, there is something that happens. But the egg and the sperm were already alive. 15 million (?) sperm (sometimes minus 1) die each time a man ejaculates. And every month (sometimes minus 1), an egg dies. When they meet, the process of life begins, but to consider that a "person" with equal rights is ridiculous.
I would agree that something special and magical happens when sperm and egg meet, but it is not a "person" -- it will, however, develop into a person given the right conditions.
Please note also that lots of other things are life -- one-celled organisms, bacteria, yeast, ants, dust mites -- are also life. To say that an egg and sperm, even when separated are not alive is a falsehood. But to say it is a "person" with rested rights is an extreme statement.